发明名称 |
High gain antenna systems for cellular use |
摘要 |
In a cellular type communication system a sector antenna 12 provides coverage of a sector with a relatively low receive gain. A multi-beam antenna 20 covers the same sector with a plurality of narrower beams 21', 22', 23' and 24' providing higher gain. A multi-beam antenna system 10 provides higher gain operation by selecting the one of the narrower beams 21', 22', 23' or 24' currently providing best reception of a signal transmitted by a user and coupling that selected beam to a system receiver 18. Beam selection is accomplished by sequentially coupling each narrow beam to a microprocessor based control unit 40 and storing samples of user signals as received in each narrow beam on a continuing repetitive basis. The stored samples are then analyzed in order to select the beam currently providing best reception.
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申请公布号 |
US5907816(A) |
申请公布日期 |
1999.05.25 |
申请号 |
US19970881263 |
申请日期 |
1997.06.24 |
申请人 |
MARCONI AEROSPACE SYSTEMS INC. ADVANCED SYSTEMS DIVISION |
发明人 |
NEWMAN, EDWARD M.;LOPEZ, ALFRED R.;SCHAY, GARY A.;PEDERSEN, JOHN F. |
分类号 |
H01Q3/26;H01Q3/24;H01Q21/28;H01Q25/00;H04B7/04;H04B7/10;H04B7/26;H04W16/24;H04W16/28;(IPC1-7):H04B1/16 |
主分类号 |
H01Q3/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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